function Student(studentId,fullname,photo,pwd,agender,phone,email,isEnd,joiningTime,studyStatus,studyType) {
    this.studentId = studentId;
    this.fullname = fullname;
    this.photo = photo;//照片
    this.pwd = pwd;
    this.agender = agender;//性别
    this.phone = phone;//电话
    this.email = email;//电话
    this.isEnd = isEnd;//电话
    this.joiningTime = joiningTime;//入学时间
    this.studyStatus = studyStatus;//当前阶段
    this.studyType = studyType;//当前阶段状态
}

function Coach( coachId,  fullname,  photo,  pwd,  agender,  phone,  email,  isEnd,  joiningTime,  teachingStage,  isStartChoice,  choiceCount,  choiceCountMax) {
    this.coachId = coachId;
    this.fullname = fullname;
    this.photo = photo;
    this.pwd = pwd;
    this.agender = agender;
    this.phone = phone;
    this.email = email;
    this.isEnd = isEnd;//是否离职
    this.joiningTime = joiningTime;//入职时间
    this.teachingStage = teachingStage;//教学科目
    this.isStartChoice = isStartChoice;//是否开始被选
    this.choiceCount = choiceCount;//当前教学人数
    this.choiceCountMax = choiceCountMax;//最大教学人数
}

function Vehicle( vehicleId,  vehicleName,  licensePlateNumber,  type, coachId,  price,  remark) {
    this.vehicleId = vehicleId;
    this.vehicleName = vehicleName;
    this.licensePlateNumber = licensePlateNumber;
    this.type = type;
    this.coach=new Coach(coachId)
    this.price = price;
    this.remark = remark;
}





